Hollow Steel Bolt
(Dead Drop Device)
This 5/8" diameter steel bolt has been hollowed out, and has a
threaded, removable head.  During the "Cold War", devices
like these were used to transfer messages and microfilms
between two individuals without the need for them to meet.  
The bolt was left in an inconspicuous location, such as on a
bridge or automobile where it would be replaced with an
original bolt.
To order this bolt, please
see our
Products Page